¹H NMR (400 MHz, CDCl₃) δ 8.81 (t, J = 2.4 Hz, 2H), 8.04 (t, J = 2.2 Hz, 1H), 7.59-7.33 (m, 4H), 7.23 (d, J = 8.3 Hz, 2H), 7.18-7.14 (m, 1H), 6.96-6.99 (m, 1H), 3.89 (s, 3H), 2.45 (s, 3H). ¹³C{H} NMR (101 MHz, CDCl₃) δ 160.1, 147.1, 146.8, 139.2, 138.8, 137.7, 136.7, 136.5, 133.0, 130.2, 129.0, 128.0, 124.3, 119.7, 113.5, 113.1, 55.4, 21.5. HRMS (EI) m/z: [M]⁺ Calcd for C₁₉H₁₇NO: 275.1310; Found: 275.1308。